| 0 | "Winter" / Barilla / Wollek | Joest Racing (D) | Reinhold Joest | Porsche | 962 | | Porsche | GTP |
| 01 | Bell / Kline | AT&T | | Royale | RP40 | | Buick | Lights |
| 02 | Ramsey / Taylor / Lewis | Kalagian/Ardisana | | Alba | AR4 | | Mazda | Lights |
| 03 | Al Levenson | Al Levenson (USA) | | Chevrolet | Corvette | C3 | Chevrolet | GTO |
| 04 | Redman / Haywood | Group 44 (USA) | | Jaguar | XJR-7 | | Jaguar | GTP |
| 07 | Pete Halsmer | Team Zakspeed USA (D) | | Ford | Mustang Probe | | Ford | GTP |
| 09 | Durst / *Brockman | Ball Bros Racing | | Tiga | GT285 | | Mazda | Lights |
| 2 | Gloy / St. James | Team Zakspeed USA (USA) | | Ford | Mustang Probe | | Ford | GTP |
| 4 | Carter / *Riggins | Dingman Bros. Racing (USA) | | Pontiac | Firebird | | Pontiac | GTO |
| 5 | Akin / Weaver | Bob Akin Motoracing (USA) | | Porsche | 962 | | Porsche | GTP |
| 6 | Charles Morgan | Morgan Performance (USA) | | Tiga | GT286 | | Buick | Lights |
| 7 | Klaus Ludwig | Team Zakspeed USA (D) | | Ford | Mustang Probe | | Ford | GTP |
| 8 | Preston Henn | Henn's Swap Shop Racing (USA) | Preston Henn | Porsche | 962 | | Porsche | GTP |
| 9 | Bill Elliot | Roush Racing (USA) | | Ford | Mustang | | Ford | GTO |
| 10 | Hotchkis / Adams | Hotchkis Racing (USA) | John Hotchkis | Porsche | 962 | | Porsche | GTP |
| 11 | Scott Pruett | Motorcraft/Roush Racing (USA) | Jack Roush | Ford | Mustang | | Ford | GTO |
| 12 | Knott / *Brayton | The Racer's Edge | Ken Knott | Argo | JM19 | | Buick | Lights |
| 13 | Rubino / Mummery | Outlaw Racing (USA) | | Argo | JM19 | | Mazda | Lights |
| 14 | Holbert / Bell | Holbert Racing (USA) | | Porsche | 962 | | Porsche | GTP |
| 15 | Steckkönig / Nierop / *Holbert | Porsche AG (D) | | Porsche | 961 | | Porsche | GTP |
| 16 | Dyson / Cobb | Dyson Racing (USA) | Rob Dyson | Porsche | 962 | | Porsche | GTP |
| 17 | Bruce Jenner | 7-Eleven/Roush Racing (USA) | Jack Roush | Ford | Mustang | | Ford | GTO |
| 18 | Jones / Andretti | BMW North America (USA) | | BMW | GTP | | BMW | GTP |
| 19 | Watson / Hobbs | BMW North America (D) | | BMW | GTP | | BMW | GTP |
| 20 | Madren / Murry | Pegasus Racing (USA) | | March | 84G | | Buick | GTP |
| 21 | Chris Kneifel | Roush/Mac-Motorcraft (USA) | Jack Roush | Ford | Sierra | XR4Ti | Ford | GTO |
| 22 | Bundy / *van der Merwe / *Dallenbach, Jr. | Hendrick Motorsports (USA) | | Chevrolet | Corvette GTP | | Chevrolet | GTP |
| 23 | McDill / McDill | Hi-Tech Coating | | Chevrolet | Camaro | | Chevrolet | GTO |
| 24 | Earl / *Young | Spice Engineering (GB) | | Spice | SE86CL | | Pontiac | Lights |
| 25 | Facetti / *Andrey / *Loring | Gaston Andrey Racing (USA) | Gaston Andrey | Tiga | GT286 | | Ferrari | Lights |
| 26 | Taylor / Hackney | Bob's Speed Products | | Pontiac | Firebird | | Pontiac | GTO |
| 27 | Cowart / Akin / *Fowells | MSB Racing (USA) | | Argo | JM19 | | Mazda | Lights |
| 28 | Overbagh / *Kimbrough | OMR Engines (USA) | Hoyt Overbagh | Chevrolet | Camaro | III | Chevrolet | GTO |
| 29 | Canizares / Strawbridge | Ares Sports | | Tiga | GT285 | | Mazda | Lights |
| 30 | Bohren / *McCall | Skoal Bandit | | Chevrolet | Camaro | III | Chevrolet | GTO |
| 31 | Ken Bupp | Sentry Bank BLDG (USA) | | Chevrolet | Camaro | | Chevrolet | GTO |
| 32 | Murray / *Valentine | Ken Murray Racing (USA) | Ken Murray | Pontiac | Firebird | | Pontiac | GTO |
| 34 | George Hulse | Ted Hulse Racing (USA) | George Hulse | Porsche | 911 Carrera | | Porsche | GTO |
| 38 | Mandeville / Marsh | Mandeville Auto Tech (USA) | Roger Mandeville | Mazda | RX-7 | | Mazda | GTO |
| 39 | Torres / Shelton | BCW Racing (USA) | Jim Torres | Porsche | 930 | S | Porsche | GTO |
| 42 | Cherry / Higgins / *Mead | White Allen Motorsports | | Fabcar | CL | | Porsche | Lights |
| 44 | Tullius / Robinson | Group 44 (USA) | | Jaguar | XJR-7 | | Jaguar | GTP |
| 46 | Crawford / *Ganz | RC Buick Hawk/Conte (USA) | | March | 85G | | Buick | GTP |
| 47 | Sereix / *Urrutia | Unlimited Telephones | | Pontiac | Firebird | | Pontiac | GTO |
| 48 | Don Walker | Global American Corp. (USA) | Don Walker | March | 83G | | Chevrolet | GTP |
| 49 | Carlos Munoz | Beep-A-Tow Racing | | Pontiac | Firebird | | Pontiac | GTO |
| 51 | Nooe / Stricklin / Stringfellow | Don Nooe Racing | | Chevrolet | Corvette | | Chevrolet | GTO |
| 52 | van der Merwe / Bundy / Dallenbach, Jr. | Hendrick Motorsports (USA) | | Chevrolet | Corvette GTP | | Chevrolet | GTP |
| 53 | Fizell / Cohen / *Capone | Mosler Racing | | March | 84G | | Chevrolet | GTP |
| 55 | Walker / Northam | Walker Racing | | Chevrolet | Corvette | | Chevrolet | GTO |
| 56 | Karl Durkheimer | Double Eagle Motorsports (USA) | | Porsche | 911 Carrera | | Porsche | GTO |
| 57 | Heinz / Yenko | Dave Heinz Imports (USA) | | Chevrolet | Corvette | | Chevrolet | GTO |
| 58 | Gregg / *McBride | Brumos Racing (USA) | | Tiga | GT286 | | Porsche | Lights |
| 61 | O'Neill / Lloyd | Performance Tech (USA) | Brent O'Neill | Argo | JM19 | | Buick | Lights |
| 62 | Wonzer / Dewey | (USA) | | Ford | Mustang | | Ford | GTO |
| 63 | Downing / Maffucci | Certified Brakes (USA) | | Argo | JM19 | | Mazda | Lights |
| 64 | Hester / Hassey | Raintree Corporation (USA) | | Ford | Mustang | | Ford | GTO |
| 66 | Jim Rothbarth | STS-Penthouse-MMR | | Argo | JM16 | | Mazda | Lights |
| 67 | Mass / *Busby | Uniroyal Goodrich (USA) | Jim Busby | Porsche | 962 | | Porsche | GTP |
| 68 | Brassfield / Morton | Uniroyal Goodrich (USA) | | Porsche | 962 | | Porsche | GTP |
| 69 | Fernando Sabino | Sabino Racing (USA) | | Ford | Mustang | | Ford | GTO |
| 71 | Hochreuter / Brezinka | Fritz Hochreuter (CDN) | | Porsche | 911 | SC | Porsche | GTO |
| 72 | Paul Gentilozzi | Whitehall Rocketsports (USA) | Paul Gentilozzi | Oldsmobile | Toronado | | Oldsmobile | GTO |
| 73 | Katz / Phillips | AMF-Howard Katz | Howard Katz | Tiga | GT286 | | Chevrolet | Lights |
| 74 | Winters / Hoerr / Casey | Whitehall Rocketsports (USA) | Paul Gentilozzi | Oldsmobile | Toronado | | Oldsmobile | GTO |
| 75 | Kendall / Jones | CCR | | Mazda | RX-7 | | Mazda | GTO |
| 76 | Jack Baldwin | Peerless/Hendrick | | Chevrolet | Camaro | III | Chevrolet | GTO |
| 77 | Willy T. Ribbs | Brooks Racing | | Chevrolet | Camaro | | Chevrolet | GTO |
| 78 | Gentile / Franchi | Gentile & Franchi | | Chevrolet | Camaro | | Chevrolet | GTO |
| 79 | McKitterick / *Coconis | Whitehall Rocketsports | | Alba | AR5 | | Oldsmobile | Lights |
| 80 | Melgrati / *Finotto | Gaston Andrey Racing | | Alba | AR6 | | Ferrari | Lights |
| 81 | Larry O'Brien | Larry O'Brien | | Mazda | OVS-1 | | Mazda | Lights |
| 82 | Keck / Fuller / Montgomery | K & P Racing (USA) | | Chevrolet | Corvette | C3 | Chevrolet | GTO |
| 84 | Clay Young | Doel Fresh Fruit (USA) | Clay Young | Pontiac | Fiero | | Pontiac | GTO |
| 87 | Morrison / Grable / *McConnell | Morrison-Cook Motorsport (USA) | | Chevrolet | Corvette | | Chevrolet | GTO |
| 88 | McConnell / Heinricy / *Grable / *Carradine | Morrison-Cook Motorsport (USA) | | Chevrolet | Corvette | | Chevrolet | GTO |
| 92 | Van Every / Tisdelle | Van Every Racing (USA) | | Chevrolet | Camaro | | Chevrolet | GTO |
| 97 | Moore / Baljet | Oftedahl Racing (USA) | Gordon Oftedahl | Chevrolet | Camaro | | Chevrolet | GTO |
| 98 | Dennis Aase | All American Racers (USA) | | Toyota | Celica | | Toyota | GTO |
| 99 | Chris Cord | All American Racers (USA) | Dan Gurney | Toyota | Celica | Mk IV Turbo | Toyota | GTO |